Cajaflavanone and cajanone released from Cajanus cajan (L. Millsp.) roots induce nod genes of Bradyrhizobium sp.

1991 ◽  
Vol 134 (2) ◽  
pp. 297-304 ◽  
Author(s):  
Jagroop S. Dahiya
Keyword(s):  
Cajanus Cajan ◽  
Nod Genes ◽  
Bradyrhizobium Sp

scholarly journals The Modification of the Flavonoid Naringenin by Bradyrhizobium sp. Strain ORS285 Changes the nod Genes Inducer Function to a Growth Stimulator

2019 ◽  
Vol 32 (11) ◽  
pp. 1517-1525 ◽  
Author(s):  
Nico Nouwen ◽  
Daniel Gargani ◽  
Eric Giraud
Keyword(s):  
Host Plants ◽  
Acid Metabolism ◽  
Growth Stimulation ◽  
Electron Microscopic ◽  
Symbiotic Interaction ◽  
Nod Genes ◽  
Phenotypic Microarray ◽  
Bradyrhizobium Sp ◽  
Control Of Expression ◽  
In Cells

As inducers of nodulation (nod) genes, flavonoids play an important role in the symbiotic interaction between rhizobia and legumes. However, in addition to the control of expression of nod genes, many other effects of flavonoids on rhizobial cells have been described. Here, we show that the flavonoid naringenin stimulates the growth of the photosynthetic Bradyrhizobium sp. strain ORS285. This growth-stimulating effect was still observed for strain ORS285 with nodD1, nodD2, or the naringenin-degrading fde operon deleted. Phenotypic microarray analysis indicates that in cells grown in the presence of naringenin, the glycerol and fatty acid metabolism is activated. Moreover, electron microscopic and enzymatic analyses show that polyhydroxy alkanoate metabolism is altered in cells grown in the presence of naringenin. Although strain ORS285 was able to degrade naringenin, a fraction was converted into an intensely yellow-colored molecule with an m/z (+) of 363.0716. Further analysis indicates that this molecule is a hydroxylated and O-methylated form of naringenin. In contrast to naringenin, this derivative did not induce nod gene expression, but it did stimulate the growth of strain ORS285. We hypothesize that the growth stimulation and metabolic changes induced by naringenin are part of a mechanism to facilitate the colonization and infection of naringenin-exuding host plants.

Associação Micorrízica em Plantas Forrageiras e seu Efeito no Crescimento de Duas Variedades de Cajanus cajan, Cultivados em Argissolo e Neossolo

2010 ◽  
Vol 12 (1) ◽  
pp. 31-34
Author(s):  
D.T.Q. Carvalho ◽  
D.F. Gomes ◽  
T.A.F. Morais ◽  
N.F. Melo ◽  
A.M. Yano-Melo
Keyword(s):  
Cajanus Cajan

Exemplar Abstract for Bradyrhizobium sp. None 2015.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Bradyrhizobium Sp

Exemplar Abstract for Bradyrhizobium sp. None 2015.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Bradyrhizobium Sp

Exemplar Abstract for Bradyrhizobium sp. None 2015.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Bradyrhizobium Sp
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